Hypertension in children is usually caused by another underlying health condition such as heart disease or kidney disease. Itis therefore referred to as secondary hypertension and once the medical condition is resolved, the blood pressure typically returns to normal. Secondary hypertension may also be caused by the following conditions:

• Hyperthyroidism
• Adrenal disorder
• Sleep problems, particularly sleep apnea
• Renal artery stenosis
• Some medications can increase blood pressure, but, again, the blood pressure usually returns to normal if the medication is discontinued.